反应详情

To a stirred solution of 2,2-Difluoro-1-((4S,5R)-4-fluoromethyl -2,2-dimethyl-5-{4-[6-(1-morpholin-4-yl-ethyl)-pyridin-3-yl]-phenyl}-oxazolidin-3-yl)-ethanone (0.101 g, 0.309 mmol) in CH2Cl2 (5 mL) is added trifluoroacetic acid (1 mL) at 0° C. Reaction mixture is allowed to stir at room temperature for 4 hours. The solvent evaporated in vacuo and the crude material is diluted with saturated bicarbonate solution and extract with 10% MeOH:DCM. Combined organic layer dried over sodium sulphate, concentrated and purified by combiflash using 5% methanol:CH2Cl2 as eluent to afford desired compound (0.076 g): 1H NMR (400 MHz, CDCl3) δ: 1.33 (d, J=2.52 Hz, 3H), 2.32-2.35 (m, 2H), 2.49-2.50 (m, 2H), 3.55-3.57 (m, 4H), 3.59-3.60 (m, 1H), 4.29-4.30 (m, 1H), 4.32 (m, 0.5H), 4.40-4.44 (m, 0.5H), 4.54-4.55 (m, 0.5H), 4.64-4.66 (m, 0.5H), 4.88 (bs, 1H), 5.92 (d, J=3.96 Hz, 1H), 6.20 (t, J=53.72 Hz, 1H), 7.45 (d, J=8.24 Hz, 2H), 7.49 (d, J=8.24, 1H), 7.69 (d, J=8.28 Hz, 2H), 8.03-8.06 (dd, J1=8.2 Hz, J2=2.4 Hz, 1H), 8.80 (d, J=2.04 Hz, 1H), 8.86 (d, J=8.56 Hz, 1H). LC-Ms (m/z): 438.1[M+H].

1. customReaction mixture
2. customThe solvent evaporated in vacuo
3. additionthe crude material is diluted with saturated bicarbonate solution
4. extractionextract with 10% MeOH
5. dry with materialCombined organic layer dried over sodium sulphate
6. concentrationconcentrated
7. custompurified by combiflash